Add the number of uses of the tag next to the entry and in search results

[teolemon]

Problem

• It's helpful to have the number of uses of the tag next to the entry, so as to prioritize translation, linking…by impact
• Being able to rank search results by uses of the tag would also be able

We can get use of tags thanks to openfoodfacts-query. We have to understand how to integrate it to the Neo4J database and if we provide a way to refresh the information.